(Chore) Apply linter in all files

[fvictorio]

The linter was only being applied to a subset of the javascript files. Most importantly, it wasn't being applied to the controllers files.

This PR makes the lint script to be applied to all files, and fixes all warnings/errors found.

[coveralls]

Pull Request Test Coverage Report for Build 372

• 4 of 4 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.02%) to 74.219%

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Totals
Change from base Build 370:	-0.02%
Covered Lines:	874
Relevant Lines:	1127

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💛 - Coveralls